Power and video redundancy system in a display system of a smart board

Abstract

The present invention relates to a power and video redundancy system for a display system of a smartboard. More particularly, the present invention relates to a power and video redundancy system applied to a smartboard display system which minimizes the user's inconvenience due to the failure or damage of components and enables the manager to repair or change the parts without the user being aware of the loss or damage.

The invention claimed is: 
     
       1. A power and video redundancy system in a display system of a smartboard comprising:
 a main video board connected to a data-providing device through a serial communication cable and a signal cable for transmitting video and audio signals; 
 a sub video board connected to the data-providing device through a signal cable for transmitting video and audio signals; 
 a video switching board configured to switch the video signal from one of the main and the sub video boards to a display panel; 
 a first power board and a second power board configured to receive and convert external power to a DC power; 
 a power redundancy module configured to output the DC power input from the first and the second power boards and to generate an alarm signal when an abnormal state of the first and the second power boards are detected; and 
 a control board connected to the main video board through a serial communication cable, 
 wherein the control board is configured to
 detect the abnormality of the main and the sub video boards, and 
 according to the detected abnormality, output a board selection signal to the video switching board to connect one which is in a normal state among the main and the sub-video boards to a display panel, and 
 wherein the control board is configured to transmit a failure message to the data-providing device when the alarm signal is input from the power redundancy module. 
 
 
     
     
       2. The power and video redundancy system according to  claim 1 ,
 wherein the control board detects the abnormality of the main and the sub video boards by generating a monitoring signal to one of the input/output ports of the main and the sub video boards to detect the feedback of the monitoring signal. 
 
     
     
       3. The power and video redundancy system according to  claim 1 ,
 wherein the main video board and the sub video board are connected to the data-providing device through an HDMI signal cable that transmits the video and audio signals without compression.